title: Dispersant-free conducting pastes for flexible and printed nanocarbon electrodes.
abstract: The dispersant-free fabrication of highly conducting pastes based on organic solvents with nanocarbon materials such as carbon nanotubes and graphene nanoplatelets has been hindered by severe agglomeration. Here we report a straightforward method for fabricating nanocarbon suspensions with >10% weight concentrations in absence of organic dispersants. The method involves introducing supramolecular quadruple hydrogen-bonding motifs into the nanocarbon materials without sacrificing the electrical conductivity. Printed films of these materials show high electrical conductivity of ~500,000 S m(-1) by hybridization with 5 vol% silver nanowires. In addition, the printed nanocarbon electrodes provide high-performance alternatives to the platinum catalytic electrodes commonly used in dye-sensitized solar cells and electrochemical electrodes in supercapacitors. The judicious use of supramolecular interactions allows fabrication of printable, spinnable and chemically compatible conducting pastes with high-quality nanocarbon materials, useful in flexible electronics and textile electronics.
authors.affiliation: 1] Nano Carbon Materials Research Group, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute, 12, Bulmosan-ro 10beon-gil, Seongsan-gu, Changwon 642-120, South Korea [2] Department of Electrical Functionality Material Engineering, University of Science and Technology, 12, Bulmosan-ro 10beon-gil, Seongsan-gu, Changwon 642-120, South Korea.
authors.forename: Joong Tark
authors.initials: JT
authors.lastname: Han
authors.forename: Bo Hwa
authors.initials: BH
authors.lastname: Jeong
authors.forename: Seon Hee
authors.initials: SH
authors.lastname: Seo
authors.forename: Kwang Chul
authors.initials: KC
authors.lastname: Roh
authors.forename: Sumi
authors.initials: S
authors.lastname: Kim
authors.forename: Sua
authors.initials: S
authors.lastname: Choi
authors.forename: Jong Seok
authors.initials: JS
authors.lastname: Woo
authors.forename: Ho Young
authors.initials: HY
authors.lastname: Kim
authors.forename: Jeong In
authors.initials: JI
authors.lastname: Jang
authors.forename: Du-Chul
authors.initials: DC
authors.lastname: Shin
authors.forename: Sooyeon
authors.initials: S
authors.lastname: Jeong
authors.forename: Hee Jin
authors.initials: HJ
authors.lastname: Jeong
authors.forename: Seung Yol
authors.initials: SY
authors.lastname: Jeong
authors.forename: Geon-Woong
authors.initials: GW
authors.lastname: Lee